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BQ34Z100-R2 ACTIVE Multichemistry Impedance Track™ stand-alone fuel gauge Supports larger size battery applications and offers better support for PbA and NiMH chemistries

Product details

Cell chemistry Lead Acid, Li-Ion/Li-Polymer, LiFePO4, NiCd, NiMH Number of series cells 2-4 Cells, >4 Cells, Single Cell Communication interface HDQ, I2C Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 32000 Implementation Pack, System External capacity indication LED Features Impedance Track™ algorithm, SHA-1 Authentication Operating temperature range (°C) -40 to 85 Rating Catalog
Cell chemistry Lead Acid, Li-Ion/Li-Polymer, LiFePO4, NiCd, NiMH Number of series cells 2-4 Cells, >4 Cells, Single Cell Communication interface HDQ, I2C Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 32000 Implementation Pack, System External capacity indication LED Features Impedance Track™ algorithm, SHA-1 Authentication Operating temperature range (°C) -40 to 85 Rating Catalog
TSSOP (PW) 14 32 mm² 5 x 6.4
  • Supports Li-ion, LiFePO4, PbA, NiMH, and NiCd chemistries
  • Capacity estimation using patented Impedance Track™ technology for batteries from 3 V to 65 V
    • Aging compensation
    • Self-discharge compensation
  • Supports battery capacities up to 29 Ah with standard configuration options
  • Supports charge and discharge currents up to 32 A with standard configuration options
  • External NTC thermistor support
  • Supports two-wire I2C and HDQ single-wire communication interfaces with host system
  • SHA-1/HMAC authentication
  • One- or four-LED direct display control
  • Five-LED and higher display through port expander
  • Reduced power modes (typical battery pack operating range conditions)
    • NORMAL operation: < 145-µA average
    • SLEEP: < 84-µA average
    • FULL SLEEP: < 30-µA average
  • Package: 14-pin TSSOP
  • Supports Li-ion, LiFePO4, PbA, NiMH, and NiCd chemistries
  • Capacity estimation using patented Impedance Track™ technology for batteries from 3 V to 65 V
    • Aging compensation
    • Self-discharge compensation
  • Supports battery capacities up to 29 Ah with standard configuration options
  • Supports charge and discharge currents up to 32 A with standard configuration options
  • External NTC thermistor support
  • Supports two-wire I2C and HDQ single-wire communication interfaces with host system
  • SHA-1/HMAC authentication
  • One- or four-LED direct display control
  • Five-LED and higher display through port expander
  • Reduced power modes (typical battery pack operating range conditions)
    • NORMAL operation: < 145-µA average
    • SLEEP: < 84-µA average
    • FULL SLEEP: < 30-µA average
  • Package: 14-pin TSSOP

The BQ34Z100-G1 device is an Impedance Track™ fuel gauge for Li-ion, PbA, NiMH, and NiCd batteries, and works independently of battery series-cell configurations. Batteries from 3 V to 65 V can be easily supported through an external voltage translation circuit that is controlled automatically to reduce system power consumption.

The BQ34Z100-G1 device provides several interface options, including an I2C slave, an HDQ slave, one or four direct LEDs, and an ALERT output pin. Additionally, the BQ34Z100-G1 provides support for an external port expander for more than four LEDs.

The BQ34Z100-G1 device is an Impedance Track™ fuel gauge for Li-ion, PbA, NiMH, and NiCd batteries, and works independently of battery series-cell configurations. Batteries from 3 V to 65 V can be easily supported through an external voltage translation circuit that is controlled automatically to reduce system power consumption.

The BQ34Z100-G1 device provides several interface options, including an I2C slave, an HDQ slave, one or four direct LEDs, and an ALERT output pin. Additionally, the BQ34Z100-G1 provides support for an external port expander for more than four LEDs.

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Technical documentation

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Type Title Date
* Data sheet BQ34Z100-G1 Wide Range Fuel Gauge with Impedance Track™ Technology datasheet (Rev. D) PDF | HTML 15 Apr 2021
* User guide BQ34Z100-G1 Technical Reference Manual (Rev. A) PDF | HTML 11 May 2022
Technical article 페달에 전원 공급 전기 자전거 및 전기 스쿠터를 위한 더 오래 지속되 는 13S, 48V 리튬 이온 배터리 팩 구현 (Rev. A) PDF | HTML 22 May 2024
Technical article 為踏板供電:實現適用於電動自行車與電動機車且續航力更長 的 13S、48-v 鋰離子電池組 (Rev. A) PDF | HTML 21 May 2024
Technical article Power to the pedal: Achieving longer-lasting 13S, 48-V lithium-ion battery packs f (Rev. A) PDF | HTML 16 May 2024
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
EVM User's guide bq34z100EVM Wide Range Impedance Track Enabled Battery Fuel Gauge (Rev. B) 16 Apr 2021
Application note BQ34Z100 to BQ34Z100-G1 Change List 15 Apr 2021
Technical article Searching for the newest innovations in power? Find them at APEC PDF | HTML 09 Feb 2019
User guide bq34z100-G1 Technical Reference Manual 26 Jun 2018
Application note Simple Guide to Chemical ID Selection Tool (GPC) (Rev. A) 05 Jun 2018
User guide Quickstart Guide for the bq34z100-G1 PDF | HTML 20 Apr 2018
Application note Gauge Communication 12 Jan 2017
Application note Using I2C Communications With the bq34110 bq35100 and bq34z100-G1 Series of Gas PDF | HTML 09 Nov 2016
Application note bq34z100-G1 High Cell Count and High Capacity Applications 29 Sep 2015
Application note Configuring the bq34z100 Data Flash 13 Nov 2012

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